Automatic whistling and signaling device.



J. T. DODSON. AUTOMATIC WHISTLING AND SIGNALING DEVICE. APPLICATION FILED n13.24, 1914.

1,1 1 9,583, Patented Dec. 1, 1914,

2 SHEET8SHEET 1.

THE NORRIS PETERS CO. PHOTO-LITHOH WASHING I'ON. D. C.

J. T. DODSON.

AUTOMATIC WHISTLING AND SIGNALING DEVICE.

APPLICATION FILED FEB.24,1914.

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THE NORRIS PETERS CD.. FHOTO-LITHQ, WASHINGTON, D4 1:.

UNITED STATES PATENT OFFICE.

5013 T. DODSON, OF KIRKSVILLE, MISSOURI.

AUTOMATIC WHISTLING AND SIGNALING DEVICE.

To all whom it may concern:

Be it known that I, Jon T. DODSON, a citizen of the United States, residing at Kirksville, in the county of Adair and the State of Missouri, have invented a new and useful Automatic Whistling and Signaling Device, of which the following is a specification.

My invention relates to devices for automatically sounding a whistle or other audible signal on a moving engine, car, or motor vehicle at predetermined points along its route of travel, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a device of the type described which is exceedingly simple in construction, consisting in fact of only two main parts on the engine frame, one of said parts being arranged to engage a stationary trip member on the track.

Other objects and advantages will appear in the following specification and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming part of this application in which Figure l is a face view of my invention as applied to an engine-frame, Fig. 2 is a rear View at right angles to Fig. 1, Fig. 3 is a side view of a trip member, Fig. 4 is a plan view of the trip shown in Fig. 3, and Fig. 5 is a section through the trip and adjacent track rail along the line 55 of Fig. 4.

In carrying out my invention I make use of any suitable portion of the engine which is situated near the track. In Fig. 1 I have shown a bar F which constitutes part of the main framework. The whistle operating device consists of two parts, an upper part H, which is in the form of a curved yoke, having a curved end h which is pivotally connected to a lever L at h. The lever L is provided with a slot Z in which the pivot pin it may play. The lever L is pivotally connected at f to the frame member F, while the member H is pivotally connected to the frame member F at m. A brace member g is secured to the frame portion F and the pivoted member H is arranged to swing up into engagement against this brace member or stop member y, being held in normal engagement with the member y by means of a spring S which is secured to Specification of Letters Patent.

Application filed February 24, 1914.

Patented Dec. 1, 1914.

Serial No. 820,691.

the frame member The pivot member H I is provided with an extension 72, Pivotally connected at K with the member H is an arm T. This arm has an extension 2? which is arranged to engage the lower part of the member H. It is held in normal engagement with the member H by means of a spring D whose opposite end is secured to the extension if.

The trip is best shown in Figs. 3 and 4. It consists of a rail R having inclined ends 7'. This rail may be secured to the ties X by spikes and may be also connected to the track rail W by means of the clamping device C.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

The trips R are disposed along the track at such points as is desirable or necessary to sound a whistle or other audible signal. IVhen the train is proceeding in the direction shown by the arrow in Fig. l and the lower end of the arm T comes in contact with the trip rail R the member H is forced into the position shown in dotted lines in Fig. 1, thereby swingingthe lever L downwardly into its dotted line position. The latter may be attached by any suitable .means (not shown) to the whistle and the whistle will be caused to sound as soon as the arm T is on the trip. WVhen it leaves the trip the spring S will return the member H to its normal position and thus the whistling will cease. If the engine should be backing up and the arm ,T comes in contact with the rail B it will be merely swung idly on its pivot K against the tension of the spring D which will return the arm T to its vertical position shownin full lines in Fig. l as soon as the rail'has been passed. Thus it will be seen that I have provided a device which is extremely simple and which may be readily attached to the frame work of any ordinary engine.

I claim:

1. The combination with a trip, of a whistle operating device actuated thereby, said device comprising a yoke pivotally connected to the frame of an engine or car, said yoke having a rearwardly and downwardly curved end, a lever pivotally connected with the frame of the engine and provided with a slot, a pivot pin carried by said rearwardly and downwardly curved end and arranged to pass through the slot of the lever, a stop member secured to the frame for limiting the movement of the yoke in one direction, a spring for normally holding said yoke against said stop member, anarm pivotally connected with the bottom of said yoke and havinga portion arranged to swing up into engagement with the yoke, a spring for holding said arm normally in'a vertical position, said arm being arranged to engage the "trip and to be forced by the latter against the yoke to cause a movement of the latter on its pivot.

The combination with a trip, of a whistle operating device actuated thereby, said device comprising a yoke pivotally connected to the frame of an engine or car, said yoke having a rearwardly and downwardly curved end, a lever pivotally connected with the frame of the engine and provided with a slot, a pivot pin carried by said rearwardly and downwardly curved end and arranged to pass through the slot of the lever, a stop member secured to the frame for limiting the movement of the yoke in one direction, a spring for normally holding said yoke against said stop member, an arm pivotally connected with the bottom of said yoke and having a portion arrangedto swing up into engagement with the yoke, a spring for holding said arm normally in a vertical position, said arm being arranged to engage the trip and to be forced by the latter against the yoke to cause a movement of the latter on its pivot, the engagement of the arm with the trip in the opposite direction serving to move the arm idly on its pivot.

JOB T. DODSON. Vvitnesses J. E. Rnienn, SIDNEY NICOLSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

